Multi-path high-definition camera monitoring system circuit

Abstract

The utility model relates to a multipath high-definition camera monitoring system circuit, which comprises a multipath camera module, a main control module, a first signal conversion module, a second signal conversion module and a display control module, the multi-path camera module is used for outputting multi-path camera signals to the first signal conversion module; the main control module is used for polling and detecting signals accessed by the cameras and initializing the first signal conversion module and the second signal conversion module; the first signal conversion module is used for converting a received camera signal into a corresponding video transmission signal and outputting the video transmission signal to the second signal conversion module, and the second signal conversion module is used for converting the received video transmission signal into a video signal and outputting the video signal to the display control module; the display control module is used for outputting a camera picture to the monitoring screen according to the video signal; the method is effectively compatible with multiple cameras and is self-adaptively initialized, and monitoring pictures with corresponding resolutions can be self-adaptively switched and self-adaptively output according to the input of the multiple cameras.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring systems, and more specifically, to a circuit of a multi-channel high-definition camera monitoring system. Background Art

[0002] Security monitoring is one of the most basic and important applications of surveillance cameras. Whether it is a surveillance camera in a public place or a surveillance camera installed at home, it can capture and record images in real time, providing strong protection for personal and environmental safety. In public places, multi-channel high-definition surveillance cameras can monitor the flow of people and vehicles in all directions, helping to detect abnormal situations in a timely manner and effectively preventing crimes; in a home environment, the surveillance camera can monitor the situation at home in real time to ensure the safety of family members.

[0003] A security monitoring system is usually integrated by multiple surveillance cameras and a background master control. Currently, due to the fact that cameras of different formats have different resolutions, during application, the application control of cameras of different formats and different resolutions is mostly carried out independently. If one of the cameras fails to display a monitoring image due to a system failure or a line failure, the system will not automatically switch to other cameras with signals for display. Instead, technical personnel need to repair and adjust it in a timely manner. It does not have a circuit control for automatically switching to other cameras with signals for display, resulting in relatively high overall operating costs and maintenance costs of the system, and there are still obvious limitations in practical applications. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a circuit of a multi-channel high-definition camera monitoring system in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a circuit of a multi-channel high-definition camera monitoring system, including a multi-channel camera module, a main control module, a first signal conversion module, a second signal conversion module, and a display control module; the first signal conversion module is electrically connected to the multi-channel camera module, the main control module, and the second signal conversion module respectively, and the second signal conversion module is also electrically connected to the main control module and the display control module respectively; the multi-channel camera module is used to output multi-channel camera signals to the first signal conversion module; the main control module is used to poll and detect the signals accessed by each camera and initialize the first signal conversion module and the second signal conversion module; the first signal conversion module is used to convert the received camera signals into corresponding video transmission signals and output them to the second signal conversion module, the second signal conversion module is used to convert the received video transmission signals into video signals and output them to the display control module, and the display control module is used to output the camera images to the monitoring screen according to the video signals.

[0006] In some embodiments, the multi-channel camera module includes an AHD format camera, a TVI format camera and a CVI format camera; the AHD format camera, the TVI format camera and the CVI format camera correspondingly output the AHD signal, the TVI signal and the CVI signal to the first signal conversion module.

[0007] In some embodiments, the first signal conversion module includes a first signal conversion chip, and the first signal conversion chip is used to convert an AHD signal, a TVI signal or a CVI signal into a corresponding BT1120 signal.

[0008] In some embodiments, the second signal conversion module includes a second signal conversion chip, and the second signal conversion chip is used to convert the received BT1120 signal into an HDMI signal.

[0009] In some embodiments, the display control module includes a display control chip, and the display control chip is used to output the camera image to the LCD according to the HDMI signal.

[0010] In some embodiments, the main control module includes an MCU, and the MCU is used to poll and detect the signal connected to the AHD format camera, the TVI format camera or the CVI format camera and initialize the first signal conversion chip and the second signal conversion chip.

[0011] In some embodiments, the MCU is electrically connected to the first signal conversion chip and the second signal conversion chip through an IIC bus.

[0012] In some embodiments, the model of the first signal conversion chip is TP9932.

[0013] In some embodiments, the model of the second signal conversion chip is LT8618SXB.

[0014] In some embodiments, the display control chip is RTD2936.

[0015] The beneficial effects of the utility model are as follows: different from the prior art, the multi-channel high-definition camera monitoring system circuit of the utility model includes a multi-channel camera module, a main control module, a first signal conversion module, a second signal conversion module and a display control module, and has circuit control for automatically switching to other camera displays with signals; it is effectively compatible with multi-channel cameras and adaptively initialized, and can adaptively switch and adaptively output monitoring images of corresponding resolutions according to the input of multiple cameras, thereby reducing the overall operating cost and maintenance cost of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a principle block diagram of the multi-channel high-definition camera monitoring system circuit in the embodiment of the present utility model;

[0017] Figure 2 It is another principle block diagram of the multi-channel high-definition camera monitoring system circuit in the embodiment of the present utility model;

[0018] Figure 3 It is a circuit schematic diagram of the first signal conversion module in the embodiment of the present utility model;

[0019] Figure 4 It is a circuit schematic diagram of the second signal conversion module in the embodiment of the present utility model;

[0020] Figure 5 It is a circuit schematic diagram of the display control module in the embodiment of the present utility model;

[0021] Figure 6 It is a circuit schematic diagram of the main control module in the embodiment of the present utility model;

[0022] Figure 7 It is a working logic schematic diagram of the multi-channel high-definition camera monitoring system circuit in the embodiment of the present utility model;

[0023] Names and serial numbers of the marks in the figure: multi-channel camera module - 1; main control module - 2; first signal conversion module - 3; second signal conversion module - 4; display control module - 5; AHD format camera - 11; TVI format camera - 12; CVI format camera - 13; first signal conversion chip - 31; second signal conversion chip - 41; display control chip - 51; MCU - 21; monitoring screen - 6. Detailed implementation manners

[0024] Terms such as "first", "second", "third", and "fourth" in the description, claims, and drawings of the present utility model are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally further includes steps or modules not listed, or optionally further includes other steps or modules inherent to these processes, methods, products, or devices.

[0025] Reference to "embodiments" in this text means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present utility model. The phrase appears at various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] "Plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0027] Moreover, terms indicating directions such as "upper, lower, front, rear, left, right, upper end, lower end" etc. are all referenced based on the posture position of the device or equipment described in this solution during normal use.

[0028] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0029] As shown in an embodiment of the present utility model Figure 1 a multi-channel high-definition camera monitoring system circuit includes a multi-channel camera module 1, a main control module 2, a first signal conversion module 3, a second signal conversion module 4, and a display control module 5; the first signal conversion module 3 is electrically connected to the multi-channel camera module 1, the main control module 2, and the second signal conversion module 4 respectively, and the second signal conversion module 4 is also electrically connected to the main control module 2 and the display control module 5 respectively; the multi-channel camera module 1 is used to output multi-channel camera signals to the first signal conversion module 3; the main control module 2 is used to poll and detect the signals accessed by each camera and initialize the first signal conversion module 3 and the second signal conversion module 4; the first signal conversion module 3 is used to convert the received camera signals into corresponding video transmission signals and output them to the second signal conversion module 4, and the second signal conversion module 4 is used to convert the received video transmission signals into video signals and output them to the display control module 5, and the display control module 5 is used to output the camera images to the monitoring screen 6 according to the video signals.

[0030] Specifically, in this embodiment, as Figure 2As shown in the figure, the multi-channel camera module 1 includes an AHD format camera 11, a TVI format camera 12, and a CVI format camera 13; the AHD format camera 11, the TVI format camera 12, and the CVI format camera 13 respectively output AHD signals, TVI signals, and CVI signals to the first signal conversion module 3. The AHD signal, the TVI signal, and the CVI signal are all analog signals.

[0031] Among them, the first signal conversion module 3 includes a first signal conversion chip 31, and the first signal conversion chip 31 is used to convert the AHD signal, the TVI signal, or the CVI signal into the corresponding BT1120 signal. For the specific circuit diagram of the first signal conversion module 3, please refer to Figure 3 . In this embodiment, the model of the first signal conversion chip 31 is TP9932. It is known that the BT1120 protocol is a digital video transmission protocol, mainly used for the transmission of high-definition video signals. In this embodiment, the signals of multiple high-definition cameras are transmitted through the BT1120 signal.

[0032] Among them, the second signal conversion module 4 includes a second signal conversion chip 41, and the second signal conversion chip 41 is used to convert the received BT1120 signal into an HDMI signal. For the specific circuit diagram of the second signal conversion module 4, please refer to Figure 4 . In this embodiment, the model of the second signal conversion chip 41 is LT8618SXB.

[0033] Among them, the display control module 5 includes a display control chip 51, and the display control chip 51 is used to output the camera image to the monitoring screen 6 according to the HDMI signal. The monitoring screen 6 uses an LCD (Liquid Crystal Display). For the specific circuit diagram of the display control module 5, please refer to Figure 5 . In this embodiment, the model of the display control chip 51 is RTD2936.

[0034] In this embodiment, the corresponding signals output by the AHD format camera 11, the TVI format camera 12, or the CVI format camera 13 are converted into BT1120 signals that can be processed by the second signal conversion chip 41 through the first signal conversion chip 31, and then the BT1120 signal is output to the second signal conversion chip 41. The second signal conversion chip 41 further processes the received BT1120 signal, converts the BT1120 signal into an HDMI signal and outputs it to the display control chip 51. Furthermore, the display control chip 51 outputs LVDS (Low-Voltage Differential Signaling) according to the HDMI signal to the LCD display, so that the LCD displays the corresponding camera image.

[0035] In this embodiment, the main control module 2 includes an MCU 21. For the specific circuit diagram of the main control module 2, please refer to Figure 6 . The MCU 21 is used to poll and detect the signals accessed by the AHD format camera 11, the TVI format camera 12, or the CVI format camera 13, and initialize the first signal conversion chip 31 and the second signal conversion chip 41. Among them, the MCU 21 is electrically connected to the first signal conversion chip 31 and the second signal conversion chip 41 respectively through the IIC bus.

[0036] As Figure 7 shown, after power-on, the display control chip 51 and the MCU 21 run simultaneously. After the display control chip 51 is powered on, it waits for the HDMI signal to be displayed. The MCU 21 polls and detects whether there is a camera accessing the camera channel. After a camera accesses, the first signal conversion chip 31 and the second signal conversion chip 41 are initialized according to the information fed back by the camera. After the initialization is completed, the received camera signal is converted and processed to be converted into an HDMI signal, and then the HDMI signal is output to the display control chip 51.

[0037] Among them, the display control chip 51 can switch the camera channel through the remote control or the button. The display control chip 51 sends a message of switching the channel to the MCU 21. The MCU 21 detects whether there is a camera accessing the current channel according to the information fed back by the camera. If there is an access, the first signal conversion chip 31 and the second signal conversion chip 41 are initialized.

[0038] It should be noted that the foregoing description of the working principle of the multi-channel high-definition camera monitoring system circuit in this embodiment during application is an explanatory description made for those skilled in the relevant art to understand its working principle during specific implementation, and it does not involve the improvement of software programs. In actual application, when using the multi-channel high-definition camera monitoring system circuit of this embodiment, the relevant control programs to be applied can be designed and selected according to actual application requirements, and this embodiment does not make specific limitations.

[0039] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A multi-channel high-definition camera monitoring system circuit, characterized in that: It includes a multi-channel camera module, a main control module, a first signal conversion module, a second signal conversion module and a display control module; the first signal conversion module is electrically connected to the multi-channel camera module, the main control module and the second signal conversion module respectively, and the second signal conversion module is also electrically connected to the main control module and the display control module respectively; the multi-channel camera module is used to output multi-channel camera signals to the first signal conversion module; the main control module is used to poll and detect the signals accessed by each camera and initialize the first signal conversion module and the second signal conversion module; the first signal conversion module is used to convert the received camera signals into corresponding video transmission signals and output them to the second signal conversion module, the second signal conversion module is used to convert the received video transmission signals into video signals and output them to the display control module, and the display control module is used to output the camera images to the monitoring screen according to the video signals.

2. The circuit of the multi-channel high-definition camera monitoring system according to claim 1, characterized in that: The multi-channel camera module includes an AHD format camera, a TVI format camera and a CVI format camera; the AHD format camera, TVI format camera and CVI format camera respectively output AHD signals, TVI signals and CVI signals to the first signal conversion module.

3. The circuit of the multi-channel high-definition camera monitoring system according to claim 2, characterized in that: The first signal conversion module includes a first signal conversion chip, and the first signal conversion chip is used to convert AHD signals, TVI signals or CVI signals into corresponding BT1120 signals.

4. The circuit of the multi-channel high-definition camera monitoring system according to claim 3, wherein: The second signal conversion module includes a second signal conversion chip, and the second signal conversion chip is used to convert the received BT1120 signals into HDMI signals.

5. The circuit of the multi-channel high-definition camera monitoring system according to claim 4, characterized in that: The display control module includes a display control chip, and the display control chip is used to output the camera images to the LCD according to the HDMI signals.

6. The circuit of the multi-channel high-definition camera monitoring system according to claim 4, characterized in that: The main control module includes an MCU, and the MCU is used to poll and detect the signals accessed by the AHD format camera, TVI format camera or CVI format camera and initialize the first signal conversion chip and the second signal conversion chip.

7. The circuit of the multi-channel high-definition camera monitoring system according to claim 6, wherein: The MCU is electrically connected to the first signal conversion chip and the second signal conversion chip respectively through an IIC bus.

8. The circuit of the multi-channel high-definition camera monitoring system according to any one of claims 3-7, characterized in that: The model of the first signal conversion chip is TP9932.

9. The circuit of the multi-channel high-definition camera monitoring system according to any one of claims 4-7, characterized in that: The model of the second signal conversion chip is LT8618SXB.

10. The circuit of the multi-channel high-definition camera monitoring system according to claim 5, wherein: The model of the display control chip is RTD2936.

Images